Oil well testing device



Juan.v 19, 1932. M. o. JOHNSTON `OIL WELL TESTING DEVICE Filed June 19, 193i 2 sheets-sheet 2 Snventor Mg 0. da

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. l Patented Jan. 19, 1932 v Ironman o. JoENsToN, or, Los mams,

uNtTD STATES) PATENT OFFICE cALIFoRNIA, assrenon To JomrsToN rom- TIoN TESTING concurran, mn., n oonrona'rron or camromrm on.v wim. rasrme nav-ron Appuoauon-nlea :une 1s, 1as1. serial no.' 545,576.

The present -invention relatesto improvements in well testing devices, and has for an object tol rovide an im roved testing device in whicli samples of 011, or other liqma be taken from the bottom of the well andy brought upthrough 'the drill. pipe.

released .after the packer has reached the rathole, ,and the test completed without putting the lifting strain on thedrill pipe by Elacing above the packer a valve that can emoved in its housing to expose ports and thus allow the free flow of mud from the packer throug v Anot er object of t e invention is to provide a device which can be easily inserted into a well cavity where the packer more near y approaches the size of the hole by the valve in position Where more readily ass through .the device from below the pacei'` and thence `out the ports above the same. v

A further object of the invention resides in a device that washe remain open and view, the invention will hereinafter, and will .be more particuscribed larly pointed` out in the claims appended ereto.

e to-produce a jarring action In the drawings where like symbols refer h to llke orcorresponding parts throughout the several views igure 1 is a ont elevational view with parts broken away of my well testing device with my improved valve in raised position.

be more readily l g can pass.

will permit the packer to be Ah ld free when the samemay become stuck i desirable to loosen the packer from t Figure 2 is a similar view showin imhproved valve -in lowered position.

igure. 3 is an enlarged. central vertical sectional view of my improved valve in raised position. Figure 4 is a horizontal section taken along the lme 4`4 in Figure 3.

Figure 5 is a horizontal se`ction`taken along the l1ne5-5 in Figure 3, and V Figure 6 is a pers ective view of one form of shearing pin to old the valve in raised position. ,l i

ferring more particularly to the drawings, the numeral 5 indicates the rathole in the bottom of the well, resulting in the shoulder `7fag`ainstwhich the lower vel portion Stof the packer 9 is adapted to engage. The packer extends exteriorl the packer mandrel 10, the lower end of which` carries the bull yplug 11 perforations k12 through which the liquid The lower portion of the p screw 'threaded 13 which extend mandrel is taining nut s up against the lower portion of the packer whereby to hold t ese parts in fixed re bers are held ment.

y`The head 15 comprises substantially a hol low cylinder of outside luniform diameter wit the retaining nut 13 1s screwed tig v ead is provided with a smaller screw threade opening 18 in threaded opening or the insertion of tools off". lesser diameter. 15. A.

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point preferablfy midway of the inside of the head to allow smaller opening,

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down the central opening in opening in t 4 throu h the valve housing and extend djustupon the valve stem 5 hollow valve stem 36. c provided with a series The upper cylindrical portion of the head is bored to form an opening 19 of ater diameter than the opening 18 an down to a point to ,communicate with the thereby producing a shoulder 20 to engage and house the ring 21 formed with the valve sea-t 22 terminating in the central opening 23 and having an outer portion cut away and screw threaded to receive the lower inside screw threaded end o valve housing 24.

The opening 19 in the threaded to receive the screw lower outer portion of the valve housing and thereby hold these parts rigid. The valve housing is internally bore to provide a chamber whereinthe valve 25 is normally held in the upper position shown in Figure 1 by a pin 26 with the weakened portion 2 being inserted through the wall o the valve head is, also screw threads on the housing and into a socket in the valve. ItA

is to be understood any form of ma?y be used and I do not mean to limit mysel to any particular design of such pins. The valve in this position is spaced from its valve seat 22 and also exposes the downwardl inclined outlets 28 in the valve housing, t ereby allowing mud or fluid to pass from the well cavity through vthe outlets,

` the ring 21 and thence seek outlet through the perforated bull frangible pin ug. The valve 25 is bored centrally to provide a passagewa and register with the elongate e hollow valve stem 29-that has its lower end externally screw threaded to engage the internal screw threaded portion of the valve, thereby holding the valve and valve stem together. The valve stem passes S pward eyond the same and carries the a in nuts 30 to-engage the screw threade portion closely placed to the upper end of valve stem. A coil spring -31 is mounted with its lower end engaging the top of the valve housing, and with its upper end in contact with the adjusting nut 30, lly hold the whereby t0 norma spring in ex anded position and the valve 5 `in raised position disclosed in Figure-1 and Figure 3. he end 29 of the valve stem is reduced slightly in size and screw threaded .to firmly secure thereto the valve chamber 32 having its upper end internally threaded to engage the-exterior threads on the stuffing box section 33. Within the stuing box section is secured a section providing a trap valve seat 34 to engage the trap valve 35 secured to the The valve stem is l of radially extending gor-tfs37which lie above the valve and extend `completely'through the'valve stem 36. y Car ried upon the lower end of: the valve stem -is a circulating ball or other' form of va ve 38 vextended the 7 rigidly held in the valve stem b a spring 39.

The upper en of the stuffing box section 33 is interiorly screw threaded to receive the packing gland 40 to compress the glan 41 against the travelling stem 42 The lower end of the travelling stem carries the trapvalve stem 36. The stuling box section is receive the ten- 43 which receives the lower en The upper end of the the lower end of sion collar of the main spring 44 main spring seats against the reducing collar 45, which latter supports the upper end of the travellingstem 42, the u )per end of the travelling stem being screw threaded into the collar 45 or otherwise held firmly. .1, i

The pipe line 46 is screwed or otherwise the collar 45. i In the operation of the device, the parts are assembled and lowered into the well cavity, as shown in Figure 1, with my improve valve in the raised position texposing the outlet openings 28 in the 'v/alve housing 24 and while so placed, th'e ltrap valve 35 and circulating valve 38 are plosed. Where the `well cavity closely approaches the size oi the packer and mud or luid are encountered, the lowering of the device will be greatly imroved from back pressure caused by mud or fluid below the pac er since they canpass into the perforated bull plug 11, through the mandrel 10 into the valve housing 24 an escape through the outlets 28 placed above the packer communicating with the well en the device reaches the bottom of the well, the parts assume the position shown in Fi The bull plug enters the rathole an the packer 9 will seat upon the shoulder ht of the drill pipe trap va A parts will continue to move downward in this position since their weight will cause the shearing of the pin 26, whereby to release the valve 25, compress the spring. 31 and force the saine down on its seat 22. In the lowered position, the valve 25 closes the outlets 28 communicating with the well cavity and with the parts so positioned the fluid to be sampled can enter the bull plug 11, and be carrie past4 the valve 25 through the trap valve 35 and thence through the drill pipe.

The valve 25 outlets 28 are vlocated above the packer 9 and below the valve chamber 32 in Awhich is housed the trap valve 35 and circulating valve 38. The location of the parts in this position aids in the lowering of the iin-'- proved'device into a well cavity since the mudand fluid below the packer that cause back pressure upon they same can readily pass into the bull plug 11, below the packer,

44 and opens the and its housing'24 havingisc :set

the

t has reached the,

vention,

packer intothe well cavity and thusal'ord a means of equalizing the pressure.

It will allow th the trap valve without interference from the fluid ormudcontained in the well cavity 5.

A feature of the invention is that the position to expose ker becomes stuck,

circulating valve hence through the outlets 28 on to the top of the packer, Whereby to wash 'the same free and allow vfree movement.

A further feature of'the invention is the ocation of the spring 31 upon the valve stem 9 above the valve housing 24 to return the valve 25' immediately to'raised position when to pass therethrough plug into the'rathole and us prevent lifting strain to beput upon e evice.` y I With thevalve 25 and the other parts of device arranged as shown, it will be possible to jar the Vpacker loose when struck by a slight raising and releasing of the drill plpe. i y

While I have shown` the lower val-ve housing 24adapted to screw inside of e spirit of my inpacker with outlets communicating with the well cavity, and a movable valve carried in the housingjvhereby to open and close said outlets.

pe ity, a substantially cylindrical 'a valve seat ixed in the be made, which could be used to limit the i:riven.` except as particularlyv valve housing rigidly 'mounted above the packer with outlets communicating with the well cavity, a valve normally held in the housutlets therein to communicate with the well cavity, and means v:for releasing said valve to move and close said outets.

3. Inwa well .testing device provided with a packer adapted to be used a val y, a valve seat opening fixed in the lower to form a central ly heldspaced the central municating for re easing said valve whereby to move and close said outlets.

n a well testing device in a well provided with an end of the housing passageway,

from the valve seat to expose provided with a cavity, al valve opening provided with a travelling stem, normally held spaced from the valve seat to expose the outlets communieating with the well cavity, means for releaslng the valve and travelling stem whereby to close the communicating outlets,

and a sprin carried bythe travelling stem positioned to be lve is closed and to restore'the parts to normal position when the releasemeans are removed.

In a well testing device provided with a packer to bv a well cavity, a mandrel to support the packer, a valve housing above e packer havin in and provided with outlets tothe well cavhead for enthe'valve housing parts inixed relation ousing, a valve with gagmg the mandrel and whereby to hold these eating with the well*v cavity, a second valve lousing carried by the drill pipe and attached travellin stem positioned to e valve 1s closed and for returning the val-ve to normal position when theA drill pipe is raised.

A o. JoHNsToN.

' 2. In a well testing device provided with a packer adapted to be used in a well cavity, a

a valve norrna1- '80 the outlets com fue g a valve seat mounted therey compressed when the 

